Fill in the blanks
Prove that the tangents to a circle at the end points of a diameter are parallel.

Tangents drawn at the endpoints of a diameter of a circle are………..

Fill in the blanks (i) A tangent to a circle touches it in …... Point (s). (ii) A line intersecting a circle in two points is called a ….. (iii) Number of tangents can be drawn to a circle parallel to the given tangent is …. (iv) The common point of a Tangent to a circle and the circle is called ..... (v) We can draw ..... tangents to a given circle. (vi) A circle can have ..... parallel tangents at the most.

Prove that any three points on a circle cannot be collinear.

Fill in the blanks Calculate the length of tangent from a point 15cm away from the centre of a circle of radius 9cm .

The lengths of the two tangents from an external point to a circle are equal.

State true or false . The mid point of any diameter of a circle is the centre.

The centre of a circle is (0,0). One end point of a diameter is (5,-1) then the radius is .....

Fill in the blanks : The boiling point of water is ……………….